Question

Of the following compounds, which would you expect to be the hardest at room temperature? SrCl2 C2H6 H2O Cl2

Answer 1

Hello, I would go with SrCl2

Answer 2

Answer: Option (a) is the correct answer.

Step-by-step explanation:

Strontium chloride (
`SrCl_(2)`) is an ionic compound. And, as it is ionic in nature so there will be strong force of attraction between the two oppositely charged ions that is,
`Sr^(2+)` and
`Cl^(-)`.

At room temperature,
`SrCl_(2)` exists in solid state.

Whereas ethane (
`C_(2)H_(6)`) at room temperature exists as a gas.

Chemical formula of water is
`H_(2)O` and at room temperature it exists in liquid state.

`Cl_(2)` is a dichlorine molecule and it exists as a gas at room temperature.

Thus, we can conclude that out of the given options
`SrCl_(2)` would you expect to be the hardest at room temperature.